桩74块Es_3下Ⅱ油组低渗透油藏储层非均质性研究  

RESEARCH ON HETEROGENEITY OF LOW PERMEABILITY RESERVOIR OF ES_3 LOWER Ⅱ OIL FORMATION IN BLOCK ZHUANG 74

作　　者：王艳红[1,2] 薛峰[2] 王伟[2] 

机构地区：[1]中国地质大学,北京100083 [2]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《海洋地质动态》2010年第8期23-27,46,共6页Marine Geology Letters

基　　金：国家重点基础研究发展规划973项目(2003CB214608)

摘　　要：从储层岩性、成岩作用、隔夹层研究等方面入手,利用渗透率变异系数、突进系数、级差、隔夹层参数以及孔隙度、渗透率的变化对桩74块低渗油藏进行了储层非均质性研究。Es_3下Ⅱ油组储层为中孔、特低渗的湖底扇碎屑岩,渗透率与主流孔喉半径具有良好的相关性,成岩作用的差异是造成储层非均质性差异的一个因素。自下而上层内非均质性逐渐加强。夹层不甚发育,对储层非均质性影响不大。层间非均质较强,隔层发育,对储层非均质性影响较大。Based on lithology,diagenesis and interbed research, heterogeneity of low-permeability res- ervoir in Zhuang 74 Block was studied using parameters including permeability variation coefficient, permeability differential indexes, interbed index, variation of porosity and permeability, etc. Es3 lower Ⅱ oil formation is uhra-lowpermeable and medium porosity clastic rocks of sublacustrine fan, whose permeability is related well with radius of the mainstream throat. Diagenesis is the major factor affect- ing on reservoir heterogeneity. Inner-layer heterogeneity becomes gradually more obvious upwards. Interbed is less developed, with little effect on reservoir heterogeneity. Interlayer heterogeneity is strong with great effects on reservoir heterogeneity.

关 键 词：非均质性 低渗透 定量 隔夹层 成岩作用 

分 类 号：TE122.23[石油与天然气工程—油气勘探]